A part, assembly, or system identified as essential to weapon system performance or operation to preserve life and safety of personnel
NSN 5990-01-311-2348
NSN 5985-01-629-8495
NSN 5835-00-111-3419
NSN 5975-01-136-8299
NSN 5925-01-394-5365
NSN 5855-00-943-3894
NSN 6220-01-614-6139
NSN 6610-00-239-2374
NSN 6645-01-319-8203
NSN 5895-00-446-2493
NSN 5910-00-918-9374
NSN 5945-00-232-4058